655611 has 8 divisors (see below), whose sum is σ = 953664. Its totient is φ = 397320.

The previous prime is 655601. The next prime is 655637. The reversal of 655611 is 116556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 655611 - 2⁵ = 655579 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (655601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9901 + ... + 9966.

It is an arithmetic number, because the mean of its divisors is an integer number (119208).

2⁶⁵⁵⁶¹¹ is an apocalyptic number.

655611 is a deficient number, since it is larger than the sum of its proper divisors (298053).

655611 is a wasteful number, since it uses less digits than its factorization.

655611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19881.

The product of its digits is 900, while the sum is 24.

The square root of 655611 is about 809.6980918836. The cubic root of 655611 is about 86.8724514892.

The spelling of 655611 in words is "six hundred fifty-five thousand, six hundred eleven".